The Technology of Emotion, Connecting People Together

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  Main Tower and Inter-tower Spacing

  The structure is ingeniously designed in an inverted Y-shape to withstand up to Richter scale 7 earthquakes and winds as fast as 72 m/s. The inter-tower distance spans an impressive 800 meters, rivaling the height of the Burj Khalifa. This remarkable distance is the longest in Korea and ranks fifth worldwide.

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  Cable

  The cable surface features countless small dimples reminiscent of a golf ball. These clever dimples reduce air resistance, effectively preventing the cables from swaying excessively during strong winds.

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  U-shaped Curvature

  To prioritize the safety of ships navigating through Incheon Port, the bridge is meticulously constructed with a U-shaped curvature, employing a design that allows for the secure passage of vessels up to 100,000 tons beneath the main towers.

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  Bridge Deck Composition

  The bridge deck is expertly crafted from steel plates rather than concrete, resulting in increased strength and reduced deck thickness. This innovative design choice minimizes wind impact on the cable-stayed bridge due to the decreased thickness.

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  Bridge Deck Elevation

  With safety in mind, the bridge deck height in the cable-stayed section is 74 meters above sea level, ensuring the secure transit of large vessels and overall stability of the Incheon Bridge.

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  Collision Prevention Measures

  There are a total of 44 collision prevention fenders surround the two main towers and some adjacent piers in the sea, functioning much like a car bumper. The first of its kind in Korea, this pioneering facility can protect the piers effectively even if a 100,000-ton cargo ship (248 meters in length) collides at a speed of 10 knots.

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  Main Tower Substructure

  The substructure of the main towers and stub piers features driven pile foundations (design standard strength of 30 MPa) with a diameter of 3 meters. Each main tower has 24 piles, while each stub and auxiliary pier contains 8. Although the influence of the stiffness of pile casing (SM 400) on seismic response has been considered, its impact on pile strength calculations and durability against salt damage have been excluded. The pile tips of the main towers are embedded in bedrock for ample support, and the stub and auxiliary piers are planned as 5 m x 7 m hollow rectangular piers. The design thoughtfully incorporates the interaction between ground and pile structures as well as the group pile effect.